Bottle seal and method of finishing the same



Jl. 0. HAS

LOWAL BOTTLE SEAL AND METHOD OF FINISHING THE SAME Filed Dec. 18, 1926 Wl TNESSES isp,...

I N VEN TOR: M013/ Mmy 8" mfg ATTORNEYS.

llatentenl helpt.. d, lldh..

application tied mecemter itt, 19%. terial tto. ltttt.,

to disks in connection with metallic bottle caps,

or as gaskets for preserving bottles, etc. .hs a result of the porosityof the cork, the liquid contents of the bottles stoppered with seals ofthis kind are often ruined either from conf liti tamination byunsanitary vegetable or other matter contained in the pits or pores, byaccess of the fluids to the metal of the cas, with resultant chemicalinteraction, or y air from without-any or all ofwhich are 2@ likely toalfcct the quality or taste of the contents. Various `expedienta---suchas constructing the seals of composite layers,'em ploying interposedlayers of paper, metallic foil, or coatings of wax-have heretofore 2tbeen resorted to in attempting to otset the ttl penetration of the sealeither by air or the contents of the bottles; `lout these have, for,various reasons, been found more or less un reliable and thereforeunsatisfactory.

'llhe objects of myinvention are to overcome the various difficultiesand objections noted, and to provide an inexpensive, yet emcient methodof finishing the seals whereby the desired results can be easilyattained. The drawings herewith illustrate by way `of example, how myinvention may be practiced in hnishing the cork sealing disks ofmetallic bottle caps otherwise complete and assembled. Referring to theillustrations au separately, lig. l is a sectional view of aconventional form of bottle cap.

lEig. 1l shows the hrst step of my improved hnishing processn o f liig.lill is an end view of the tool shown llig. lll shows-thecap, afterhaving undergone the hrst step referred to. f

Figs. l? and Vl arerespectively a sectional view and aP plan view of thecap after having t@ undergone the second and nal step of my process.

rlhe bottle closure, yshown inl l ofv these illustrations, comprises theusual crown-like metallic cap 10 with the corrutt gated periphery 11,and the inset disk of cork 12 secured either by gluing or throughcompression within the recess of the cap.. Assuming these parts to havebeen assembled 1n the customary manner, l .proceed with the finishingprocess in accordance with my into ventlon, by first subjecting thesurface of the cork disk 12 to an abrading action. lior this purpose itis `convenient to employ a cylindric tool such as shown at 13 in Fig.

ll, thelower end lat whereof is reduced to at the diameter of the corkdisk 12 and its bottom face ,coa-ted with Vsand or otherwise roughcned`as diagrammatically represented in Fig. lll. By relative motion asbetween the tool 13 andthe cap4 and by maintenance to of a certainamount of pressure therebetween, the surfaceof the cork l2 is not onlyAroughened, but the grindings resulting from such treatment are workedinto the pits or pores of the seal and incidentally closely t5 compactedtherein, as conventionally indi-u cated at 16.. 'lhis initial treatmentis continued for a periodl sufficient to insure complete tlling andstopping of the pits or pores shown in ltig.v lill'.

With the sealing disk thus prepared, l next apply a thin coating of asuitable quickcongeallng chemically-inert colloidal soluwhereupon thebottle closure will appear as eo tionsuch for example askcelluloseto'foim aa a fluid-impervious protective skin 17 over thecentral part of the disk, leaving lout a narrow circumferential margin18 of raw cork exposed for contact with the bottle mouth, seeligs. ifand Vl. By application o@ ofthe colloid in diluted or liquid form, thesame not only attaches itself effectively to the roughened surface ofthe sealing disk, but penetrates the pulverized cork in the pits orporesand insures the filler against subsepy,

quent disintegration and dislodgrnent.

With the cork pores thus lled up and the skin coating applied, the'surface of the seal-- ing disk is rendered absolutely impervious to theduid contents of the bottle (which may be eitherfliquid or gaseousiwithwhich the n closure is used, therebyodsettingthe -,rossibility ofcontamination either from vegetable or other matter originally in thepores, or

chemical interaction with the metal of the cap, or by air leakage fromwithout.

ltis of course to be understood that in.

lieu. of the ground cork and cellulose colloid specifically hereinbeforementioned, any

other chemically-inert-filler or coating havjaar Cil ing resilient proerties comparable to that of the cork itsel may be employed for the 'puroses of my invention. Also, lif desired,

plicable to other types of closures constructed either Wholly or partlyof cork.

Having thus described my invention, I

`claim l. A cork seal having its surface abraded and its pit holes orpores stopped with the pulverulent cork resulting from the abrasiveaction.

2. A cork seal having itssurface roughened and its pit holes or poresstopped with the pulverulent cork resulting from the rougheningtreatment, and coated with a Huid-impervious colloidal skin, to preventdislodgment or disintegration of the pulverulent cork.

3. A cork seal having its pit holes or pores stopped with compactedpulverulent filling, and its surface, except for a circumferentialmarginal portion adapted to contact with the container mouth, coatedwith a fluid-impervious skin of congealed colloidal solution.

4. A bottle closure including a metallic cap wth'an inset cork sealingdisk, the pit holes or pores of said disk stopped with' compactfd groundcork, and its surface, except for a circumferential marginal portionadapted for contact with the lbottle mouth, coated with afluid-impervious skin of congealed colloidal solution.

5. The method of finishing sealing cork by abrasion of the cork surfaceto provide powdered cork for incidental filling of the pit holes orpores.

6. The method of finishing sealing cork by packing its pits or coreswith chemicallyinert pulverulent material, and surfacing the cork with afluid-impervious skin of congealable colloidal solution.

7. The method of finishing sealing cork by abrasion of its surface toprovide powdered cork for incidental iilling the pit holes or pores, andat' the same time to roughen the surface for better retainment of. asubscquently applied fluid-impervious skin of congealable colloidalsolution.v

8. The method of finishing metallic bottle caps with 4inset cork sealingdisks, by subjecting said disks, while in the caps, to abrasive act-ionto provide powdered cork for incidental filling the pit holes or pores,and thereafter applying a Huid-impervious skin of congealable colloidalsolution over the roughened filled surface.

9. A cork seal having its pit holes or pores stopped with a compactedpulverulent filling.

10. A cork seal for a bottle having its pit holes or pores stopped witha compacted filling of ground cork.

11. A method of finishing sealing cork by packing its pits or pores witha chemicallyinert ulverulent material.

l2. he method of finishing bottle scaling cork by packing its pits orpores with ground cor r.

In testimonyb whereof, I have hereunto signed my name lat Philadelphia,Pennsylvania, this 14th day of December, 1926.

JACKSON O. HAAS.

